What tablet are you using? I don't have any such issues in the oldish android tablet I've got. If it's got like 1GB of RAM that's your problem.
You should be using the spotify app, not the browser version.
its an RCA voyager, i got it for christmas its my first tablet. i believe it was $40 something and came with an attachable keyboard. it was from walmart.
i prefer using the web version because with ad block most ads get blocked. although they still play every now and then on a ad blocking browser like Brave. if i was on a computer and used ublock origin i would never get ads at all.
''Hey I ain't ugly! I'm just way below average!!!'' -Genocide Jill. PSN: RJP_X